Grate.



S. SMYTH.

GRATB.

APPLICATION FILED mam, 1912.

1,046,882, Patented Dec. 10, 1912.

COLUMBIA YPLANOGRAPH c0., WASHINGTON, D. c.

SAMUEL SMYTH, OF PITTSTON, PENNSYLVANIA.

GRATE.

Application filed April 22, 1912.

To all whom it may concern:

Be it known that I, SAMUEL SMYTH, a citizen of the United States,residing in Pittston, Luzerne county, State of Pennsylvania, haveinvented certain Improvements in Grates, of which the following is aspecification.

My invention relates to fire grates for furnaces, ranges or stoves butmore particularly to that class of grates in which the bars comprisingthe grate may be moved or agitated to discharge the ash.

My invention consists of a grate of the above described type in whicheach or certain ofthe grate bars are made in sections, each sectionbeing capable of being moved independently of or together with certainof the other sections.

The object of my invention is to permit certain sections of the firethroughout the length of the grate bars to be raked without disturbingthe remaining portion of the fire. This object I obtain in the followingmanner, reference being had to the accompanying drawings in which,

Figure 1 is a plan view of a grate c0nstructed in accordance with myinvention; Fig. 2 is a transverse sectional elevation taken on the linea-a Fig. 1; Fig. 3 is a longitudinal sectional view taken on the lineb-b Fig. l; the sections of the grate bar being shown entirely inoutside view; Fig. 4 is a plan view of the modified form of myinvention; Fig. 5 is a longitudinal section taken on the line cc Fig. 4;Fig. 6 is a sectional view showing means of supporting a grate barbetween the two sections; Fig. 7 is a view of a grate bar in which thesections are of difierent lengths; and Fig. 8 is a view of one form ofraking lever, which I may employ.

Referring to the drawing 1 is the grate frame forming a pivotal supportfor the grate bars 2. Each of the said grate bars 2 are composed ofsections 3 and 4. In Fig. 1 the sections 3 are shown journaled at 5 inthe frame 1 and have integral spindles 6 which pass through the lengthof respective sections 4. Each section 4 has one end 7 also journaled inthe frame 1. In order to allow the sections 3 to be turned by a wrenchor raking lever, the ends 8 of the spindles 6 are extended beyond theends 7 of their respective sections 4. The ends 7 ,of the sections 4 mayalso be shaped so as to be turned by the wrench or lever abovementioned. Thus it will be seen that with Specification of LettersPatent.

Patented Dec. 10, 1912.

Serial No. 692,304.

this construction, if it is desired to rake the portion of the firewhich is above the sections 3, the raking lever is applied to the ends 8of the spindles 6, the said spindles may then be either rotated orreciprocated by the said lever, and as the spindles 6 are integral withthe sections 3 the latter will be moved to rake the portion of the firewhich is directly above and supported by them.

If it is desired to rake the portion of the fire which is directly aboveand supported by the sections 4, the raking lever is applied so as toengage the ends 7 of the sections 4, and when moved will also move thesections 4 and thereby rake the portion of the fire which is directlyabove the latter. If it is desired to simultaneously move the sections 3and 4 to rake the fire which is supported by the entire length of thebars 2, the lever may be applied so as to engage both the ends 8 and 7.p

In the modifications shown in Figs. 4 and 5 I show intermeshing gearwheels 9 and 10 which are keyed to respective sections 11 and 12. Thesection 11 of the grate bar 2* which has its end 11 journaled in. theframe 1 is provided with an integral spindle'13 which loosely passesthrough the section 14 of the said bar. The section 14 has its end 15journaled in the frame 1*. The section 12 of the grate bar 2 which hasits end 12' journaled in the frame 1 has an integral spindle 16 whichpasses through the grate bar section 17, the latter having its end 18jo-urnaled in the frame 1 Intermeshing wheels 19 and 20 are keyed to theends 15 and 18 of the sections 14- and 17 respectively. As the spindle13 extends beyond the end 15, it is obvious that if the raking lever beapplied to the end of the former and moved that the sections 11 and 12will be moved in unison, likewise if the raking lever is applied to theend 15 and moved, the sections 14 and 17 will move in unison. Byallowing the raking lever to engage both the spindle 13 V and the end 15all the sections 11, 12,14 and either side or any other supportingstructure.

While I have shown in Fig. 7 a bar comprising sections of differentlengths, it will Prior to my invention in furnaces having mechanicalgrates, it was customary to keep the fire burning continuously night andday as a matter of convenience and economy. However, during nights and agreat portion of the days it would have been sutficient to have kept butone-half of the fire burning, but as this could not be done, a greatdeal of fuel has been wasted. By making the grate bars in sections, asillustrated, and constructing the sections so that they may be agitatedindependently or simultaneously and at the will of the operator, theamount of coal which is desired to be ignited at any one time can becontrolled.

My invention is especially valuable in cook stoves or ranges as it isexceedingly wasteful to burn the full capacity of the fire box whenone-half or other fraction would spindle 13. Also the grate may be madeup of all sectional bars as described, or certain of them may be made inone piece. In other words, I can make a grate in which certain of thebars are of the usual construction,

and certain of the bars constructed in sec-.

tions in the manner hereinbefore described.

In Fig. 1, I have shown the sect-ions 4 partly in section in order tomore clearly show just how the spindles pass therethrough. The sectionsof the grate bars may be of any shape desired without departing from thespirit of my invention; in Fig. 2

the same are shown as having three faces any one of which may form asupport for the fuel.

I claim 1. A grate bar comprising a plurality of independently rotatablesections one of said sections havinga member passing through anothersection; and means applicable to the said member and latter section andfor ro- Copies of this patent may be obtained for tating the sectionsindependently or simultaneously. V

2. A grate bar comprising a plurality of sections in longitudinalalinement, one of said sections having a fixed extension passing throughanother section and around which the latter may be rotatably moved, thesaid extension and the latter section having a lever-engaging formationwhereby the sections can be moved independently or simultaneously.

3. The combination of a supporting structure and a grate bar journaledtherein and comprising a plurality of independently movable sections,one of the said sections having a fixed projection extending beyond theouter surface of the supporting structure, anotherof said sectionshaving a fixed projection extending through the first mentionedprojection and beyond the outer surface of the supporting structure; anda wrench lever having port-ions applicable to either or both of the saidprojections Whereby the sections can be rotatably moved independently orsimultaneously.

4. The combination of a supporting structure; and a grate bar comprisinga plurality of independently movable sections, one section having afixed project-ion extending to the outside of the supporting structure,another section having a fixed projection extending through the firstmentioned projection and to the outside of the supporting structure,said sect-ions being ournaled 1n I extendingto the outer surface of thesupbar having a fixed projection extending through the first mentionedprojections of respective sections and to the said outer surface of thesupporting structure; and means on the ends of the projections wherebycertain of the sections can be moved independently of or simultaneouslywith other sections.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

SAMUEL SMYTH. Witnesses A. T. WALSH, H. G. SMYTH.

porting structure another section in eacl" five cents each, byaddressing the Commissioner of latents, Washington, D. G. I

